What happens if you cut a flatworm in half?

What happens if you cut a flatworm in half?

The organism itself does not have to be completely cut into separate pieces for the regeneration phenomenon to be witnessed. In fact, if the head of a planarian is cut in half down its center, and each side retained on the organism, it is possible for the planarian to regenerate two heads and continue to live.

What is the common name for Trematoda?

fluke, also called blood fluke or trematode, any member of the invertebrate class Trematoda (phylum Platyhelminthes), a group of parasitic flatworms that probably evolved from free-living forms millions of years ago.

How long do planarian worms live?

If no food is available, a healthy planaria can survive for up to three months in the fridge without harmful effects.

What is the common name for trematoda?

What class are Monogenetic flukes?

Class Monogenea
Platyhelminthes: Class Monogenea. Enter your search terms: Monogenetic flukes spend their entire life cycle as parasites on a single host, often on the gills and skin of fish; they include no human parasites.

What is the average size of a planaria?

planarian, common name for several genera of the free-living (turbellarian) flatworms belonging to the order Tricladida, a name that derives from their characteristic three-branched digestive cavities. Most species range from 1/8 in. to about 1 in. in length (.32–2.54 cm) although some giant tropical forms range up to 2 ft. (60 cm).

How do planarians grow and de-grow?

Planarians grow and literally de-grow (“shrink”) by the food supply-dependent adjustment of organismal turnover rates, scaling body plan proportions over as much as a 50-fold size range.

What type of animal is a planarian?

Planarian, any of a group of widely distributed, mostly free-living flatworms of the class Turbellaria (phylum Platyhelminthes). The name planarian is used to designate any member of the family Planariidae and related families. Most planarians live in fresh water; some species are marine, while others are terrestrial.

What type of cilia are found in planaria?

Planarians are free-living invertebrates that employ motile cilia for locomotion. Specifically, cilia that populate the ventral epithelium of the planarian body are highly conserved, with a 9 + 2 axoneme and a full complement of inner and outer arm dynein motors. The abundance of cilia on the planarian body,…